NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Johan Nicolaas Leeflang, PA-C

Physician Assistant in St George, UT · enumerated 2011 · practices at Southwest Surgical Associates.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1508149634

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Johan Nicolaas Leeflang
Credential PA-C
Sex Male
Practice address 1490 E Foremaster Dr Ste 200, St George, UT, 84790
Phone (435) 628-1641
Enumeration date Sep 26, 2011
Last updated in NPPES Nov 2, 2011

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 6496047-1206 (UT) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Johan Leeflang's NPI record?
Cross-check NPI 1508149634 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1508149634 active?
Yes, as of the latest NPPES snapshot, NPI 1508149634 is active (record last updated 2011-11-02).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-02.